body {
	overflow: hidden;
	background-color: rgba(0,206,209,.3);
}

.balloon {
	width: 160px;
	height: 160px;
	background-color: transparent;
	border-radius: 160px 160px 64px 160px;
	transform: rotate(45deg);
	box-shadow: -8px -8px 80px -8px #fff inset;
}
